A new cooling approach for traction motors in hybrid drives

Nollau, Alexander; Gerling, Dieter

doi:10.1109/iemdc.2013.6556136

Cited by 26 publications

(10 citation statements)

References 3 publications

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“…With turbulent flow, the flux barrier cooling is increased by 10 percent, resulting in higher heat dissipation as the cooling area is enhanced. Nollau et al [91] developed in 2013, a new solution for traction engines in Battery Electric Vehicle (BEV) or hybrid drives. The new approach to cooling technique is based on a vortex pipe which produces an air stream of -40°C and compares results using a standard method of water cooling.…”

Section: Cooling Methodsmentioning

confidence: 99%

A Review on Methods to Reduce Weight and to Increase Efficiency of Electric Motors Using Lightweight Materials, Novel Manufacturing Processes, Magnetic Materials and Cooling Methods

Solomon¹,

Greco²,

Masselli³

et al. 2020

ACSM

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The electric motor is the mechanism that transforms electrical energy into mechanical energy. Nowadays, electric motors are the cause of a considerable share of the use of electricity and therefore of the energy consumptions (70% in the industrial sector and 25-30% in the tertiary sector). Faced with ever-increasing energy demand and with a view to adhering to the all-over-the world imperative of adopting measures to reduce energy consumption in all the involved sectors, the use of efficiency enhanced electric motors is required. Generally, the efficiency of an electric motor depends on the type of motor, the size of the motor, the utilization factor, but also on the quality and quantity of the materials employed. Therefore, from all these aspects the need of using energy and costefficient components for developing electric motors arises. This review paper aims to draw a general framework on the methods of increasing efficiency and of reducing weight of the electric motors.

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Section: Cooling Methodsmentioning

confidence: 99%

A Review on Methods to Reduce Weight and to Increase Efficiency of Electric Motors Using Lightweight Materials, Novel Manufacturing Processes, Magnetic Materials and Cooling Methods

Solomon¹,

Greco²,

Masselli³

et al. 2020

ACSM

View full text Add to dashboard Cite

show abstract

“…Due to the advancement of the computational power in the recent years, using CFD conjugate thermal analysis for electric machines became a focus of several researchers [107,108]. Previous research using conjugate CFD thermal analysis focused on air cooled systems [109][110][111], water or oil cooled systems [80,112,113] and hybrid systems [114]. In the recent study performed by Schrittwieser et al [111], the authors compared between the simulation results based on a conjugate heat transfer model and those obtained by conventional heat transfer model (no conduction).…”

Section: Cfd Analysismentioning

confidence: 99%

Thermal management of electric machines

Yang

Bilgin

Kasprzak

et al. 2017

IET Electrical Systems in Transportation

105

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Electric machines have broadly been used in many industries including the transportation industry. With the evolving trend of electrification in transportation, electric machines with higher power density and higher efficiency are demanded and, thus, more stringent thermal management requirements are needed for electrified vehicle applications. This study comprehensively presents various important aspects of thermal management in electric machines with the main focus on transportation applications. Design considerations, challenges, and methods for enhanced thermal management are discussed. Fundamental thermal properties of common materials are presented and sources of losses in various parts of machines are explained. Furthermore, typical cooling techniques and thermal analysis approaches for electric machines are reviewed in detail. This study will serve as a reference guideline for machine designers, who are interested in thermal management, and for thermal researchers working on electric machines.

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“…Another important advantage of a well-impregnated stator is the fact that resins have a ten times higher heat conductivity compared to air [4]. Since the winding temperature is a power limiting factor and cooling is often based on heat transportation via the laminated stator core, the heat conductivity between copper and iron is an important factor for the thermal behavior of electrical machines.…”

Section: Introductionmentioning

confidence: 99%

Influence of different impregnation methods and resins on thermal behavior and lifetime of electrical stators

Richnow

Stenzel

Renner

et al. 2014

2014 4th International Electric Drives Production Conference (EDPC)

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The relationship between impregnation process and winding temperature has not been analyzed in detail yet. Therefore, one purpose of this paper is to investigate the correlation between impregnation process, resin absorption, applied resin, and thermal behavior. Apart from thermal behavior, it has to be ensured that the lifetime of the manufactured electrical machines still meets industrial specifications. The lifetime is primarily affected by the quality of the insulation system. So the second purpose of this paper is to investigate the influence of the named aspects on the lifetime of an electrical machine.

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A new cooling approach for traction motors in hybrid drives

Cited by 26 publications

References 3 publications

A Review on Methods to Reduce Weight and to Increase Efficiency of Electric Motors Using Lightweight Materials, Novel Manufacturing Processes, Magnetic Materials and Cooling Methods

A Review on Methods to Reduce Weight and to Increase Efficiency of Electric Motors Using Lightweight Materials, Novel Manufacturing Processes, Magnetic Materials and Cooling Methods

Thermal management of electric machines

Influence of different impregnation methods and resins on thermal behavior and lifetime of electrical stators

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